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Finding the Fourth Proportional to 235,039, 324,353.82 and 129,055

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Solution

The fourth proportional to 235,039, 324,353.82 and 129,055 is: 178,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,039 : 324,353.82 = 129,055 : x
  2. Step 2: Convert to fraction form
    235,039/324,353.82 = 129,055/x
  3. Step 3: Cross multiply
    235,039x = 324,353.82 × 129,055
  4. Step 4: Simplify right side
    235,039x = 41,859,482,240.10
  5. Step 5: Solve for x
    x = 41,859,482,240.10/235,039
  6. Step 6: Final answer
    x = 178,095.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.